{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE43A-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE43A-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43A-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE43A-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® TVS diode, 1.5KE43A-/73, unidirectional, 1500W peak pulse, 36.8V standoff, 59.3V clamp, DO-201AA axial, through-hole.","salesMarkdown":"## Clamping, standoff, and pulse current — what the ratings mean for rail protection The 1.5KE43A-E3/73: The 36.8 V reverse standoff is the maximum DC or peak-AC voltage the diode blocks without conducting — a 24 V nominal rail with 30 % tolerance stays below this threshold, so the TVS sits off the line until a transient pushes it into avalanche. Breakdown starts at 40.9 V minimum; the diode fully clamps at 59.3 V, limiting the voltage the downstream circuitry sees. Peak pulse current is 25.3 A for the 10/1000 µs test waveform — this is the current the diode can sink while holding the clamp voltage. The 1500 W rating is the product of clamp voltage and pulse current at that waveform; shorter pulses (8/20 µs) allow much higher peak current, but the 10/1000 µs figure is the conservative design-in number for most industrial surge specs like IEC 61000-4-5. At elevated ambient the derating curve in the datasheet reduces peak pulse power linearly above 25 °C, so a hot enclosure (85 °C) derates the 1500 W rating to roughly 60 %. ## DO-201AA axial — board-fit and mounting Housed in a DO-201AA (DO-27) axial-lead package, through-hole mount. The body diameter is about 5.3 mm with 25.4 mm lead spacing typical — fits standard 0.100-inch pitch holes on a proto board or production PCB. The axial form factor allows point-to-point wiring in high-reliability assemblies where surface-mount reflow is not an option.","metaTitle":"1.5KE43A-E3/73 TVS Diode, 1500W, 36.8V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE43A-E3/73 TransZorb® TVS, 1500W peak pulse, 36.8V reverse standoff, 59.3V clamp, DO-201AA axial. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Tape & Box (TB)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE43","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"40.9V","Voltage - Clamping (Max) @ Ipp":"59.3V","Voltage - Reverse Standoff (Typ)":"36.8V","Current - Peak Pulse (10/1000µs)":"25.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3465","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE43A-/73 come in?","answer":"Through-hole DO-201AA axial-lead package, also known as DO-27. The Tape & Box (TB) packaging option is for automated insertion lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43A-E3-73","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43A-E3-73 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}